Recent theoretical advancements suggest that primordial black holes (PBHs), hypothetical black holes formed in the early universe, may be responsible for producing high-energy neutrinos and contribute significantly to dark matter. These black holes, through a process known as Hawking radiation, could emit particles, including neutrinos, as they evaporate. Studies indicate that the final explosive events of PBHs might generate ultrahigh-energy neutrinos detectable on Earth, providing insights into both the nature of dark matter and the fundamental physics governing the universe.